Protesting strongly (2,2,4)
I believe the answer is:
up in arms
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">protesting strongly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for up in arms that I've seen before include "openly rebellious" , "held like a small child" , "being angry" , "Better prepared for battle" , "Prepared to protest strongly" .)